Gear-wheel.



J. MILLER.

GEAR WHEEL.

APPLICATION FILED JUNE 27, 1911.

Patented May 13, 1913.

Inventor. John /77 /er', am

Hisflttornqg W/nesses: M 16 UNITED strArEs PATENT o roE.

JOHN MILLER, OF SGHENECTADY, NEW YORK, ASSIGIQOR T GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

GEAR-WHEEL.

Specification of Letters Patent.

Patented May 13, 1913.

lcontinuation of application Serial No. 507,097, filed July 12, 1909." This application filed June 27, 1911. Serial No. 635,655.

507,097, filed July 12, 1909,) of which they following is a specification.-

The ob ect of my inventlon 1s to provide a noiseless or non-resonant P11110110? gearwheel which shall be stronger and more 'durable than devices. heretofore on themarket designed to accomplish the same function.

N oiseless pinions or gear-Wheels have pre'' viously been made of layers of leather, rawsite end -I provide a loose plateor disk 3' hide, paper or indurated fiber, but pinions, or gear-wheels made of these materials are;

objectionable for they deteriorate rapidly in. use, shrink and swell according to the amount of oil or moisture absorbed and are easily stripped of theirteeth'. It has been proposed to interpose between layers of thesevariousmaterials, sheets of metal to sustain the stresses imposed upon the teeth, but such interposed sheets of harder material are highly objectionable in that they cut and destroy the smooth slidin surfaces of the teeth ,ofthe-gears meshing erewith, and only {partially overcome the objections to the ordinary gear.

I have discovered that pinions or gearwheels made up of spinnable textile fibers highly compressed are stronger, more rable, do not shrink or swell and are altogether superior to any of the other kinds of noiseless pinions or gears produced up to the present time.

In the accompanying drawing, Figure 1 shows in end elevation and Fig. 2 in transverse section a pinion made in accordance with my invention.

As shown in the drawing, the gear consists of a hub 1 in the form of a sleeve adapted'to be keyed to a shaft and having at one end an integral plate 2, while at the oppohaving keys 4 in engagement with the hub 1. Between the radial plates 2 and 3 is a mass of s innable textile fibers 5 highly oompresse and secured in compressed state expression spinnable textile fibers is'used in this specification to collectively designate the various fibers of the class that have been commonly used' in making yarns and in the fabrication of cloth, which are characterized by pliability, strength and long spinnable" staple, as, for example, cotton, flax, hemp, ram1e,wool and silk; Spinnable textile fibers maybe subjected to ahigh degree of compression without destroying or impairing their characteristic properties and by longitudinal bolts or rivets 6 headed in' countersunk holes in the plates 2 and 3. The

when a mass of such fibers is compressed each fiber is, in frictional contact with a multitude of other fibers, which affordsgreat cohesiveness to the mass and great resistance to disturbance'of the fibers relative to each other under stresses such as'are'liimposed upon the teeth of a gear.

In order to insure uniform distribution disks from a batten or layer of 'thefibers and stack them one above the other in the press by which they are compressed. I have blanks and stacked, as above set forth.

After the textile body of the gear has been compressed to the proper degree between of the textile fibers, I prefer to-cut circular the metallic end plates and the cempressionsustaining means secured, the gear blank thus formed may be removed from the press and turned and milled according to the practice in making metallic gears,

I do not desire to restrict myself to the particular form or arrangement of parts herein shown and described, since it is apparent that they may be changed or modified without departing from the spirit ofimyinvention.

What I claim as new and desire to-secure by Letters Patent of the-UnitedStates, is,- 1. A ear having its body portion composed 0 highly compressed spinnable textile fibers.

2. A gear havin a toothed body part i composed of spinna le textile fibers.

3. A gear composed of compressed s innable textile fibers, and means for hol ing said material in compressed state.

4. A gear having a toothed body part composed of spinna-ble textile fibers, metallic composed of layers of textile fabric inade end; plates, and means for securing said of spun yarn. f

textile material and said end plates to- In Witness whereof, I have hereunto set gether. J my hand this 23rd day of June, 1911.

5. A gear having its toothed body portion JOHN MILLER. composed of layers of spinnabletextile Witnesses: fibers. v BENJAMIN B. HULL,-

' 6. A- gear having its toothed body portion; I MARGARET E. WOOLLEY. 

